Cage for antifriction-bearings.



, P. BALTZER. GAGE FOR ANTIFRIGTION BEARINGS.

APPLICATION FILED JAN.3,'1914.

1,114,332, 1 1 Patent ed 0ct.20,l914.

nventor:

by f GW Attys.

FRIEDRICHIBALTZER, OF BERLIN, GERMANY.

CAGE FOR ANTIFRI-CTION-BEARINGS.

Specification of Iletters Patent.-

Patented Oct. 20, 1914.

Original application filed November 12, 1908., Serial NO: 462,293.Divided and this application filed January 3, 1914. Serial No. 810,129.

To all whom it may concern:

Be it known that I, FRIEDRICH BALTZER, a subject of the Emperor ofGermany, re-- siding at Berlin, Germany, have mvented:

certain new and useful Improvements in Cages for AntifrictiomBearmgs, ofwhich the following is a specification, reference being had therein tothe accompanying drawings, being a division of original application;filed November 12, L908, Serial No. 462,293..

This invention relates to antifriction bearings in which rollingelements are mounted between casing members, and has reference moreparticularly to. the form and construction of the cage or spacing deviceusually employed to maintain the rolhng elements in spaced relations,and embodying usually a ring or support equipped with holding 'membersfor the rolling elements.

The invention is directed tothe production of a light and inexpensivecage'in whlchthe rolling elements will be held resiliently,

and in which there will be provision for the ready detachment or removalofthe holding members in the event of injury thereto; and

'the invention consists in a cage comprising a ,backon'the sides of theloop and fastened tothe support, preferably by interlocking said endswith the su port to enable the members to be readily etached at will.

In the "accompanying drawings I have shown my invention in the form anddetailed construction which I prefer to adopt for the ends in view, butit will be manifest that the invention is susceptible of suchmodifications and changes as will suggest themselvesto the skilledmechanic, and that the same is not limited to any particular form orconstruction of the parts except in,

the, claims.

Referring to the drawings: Figure 1 is a plan view of an antifrictionbearing equipped with a spacing cage constructed in accordance with myinvention. Fig. 2 is a sectional elevation through a portion of thecage, showing two of the holding members secured inoperative position onthe support,

so far as such limitations are specified in and one partially secured toshow the method of removal and detachment.

casing members 1v and 2 respectively of the bearing, and aseries ofholding members 3 for the rolling elements, which holding members arefastened to'the support and formed each with opposing holder or clampingfingers 4 between. which the rolling elements,

in the present instance in the form of balls,

are embraced.

The holding members are formed each from a single piece or strip of thinmetal, with its central portion bent in the form of a loop 5 to conformto the circumferenceof the ball, and its ends folded back on the sidesof the loop. toform. shanks or tongues c for attachment to thesupporting ring,

which tonguesare passed.- through slots in the ring and have theirextremities bent inwardly toward each other against the. opposite faceof the ring. These loops at the point where the folds are formed, arebent inwardly toward each other to conform to the circumference of theball,

nearly meeting at this point, with the result that the loop practicallysurrounds the entire surface of the ball, which is thus held firmly butresiliently with spring pressure between the. opposing sides of theloop. From this construction it will be observed that each holdingmember retains its ball independently of the other, so that by settingthe' several members close together around the ring, as shown, the ballsmay be arranged very close together and nearly the full complement used.o

Furthermore it will be observed that by reason of the manner offastening the members to the supporting ring, they may be readily andindividually" detached without the necessity of employing special tools,it being only necessary to bend the tongues outward. to the positionshown at the bottom of Fig. 2, whlch will allow the member to be drawnfrom the ring. This is of advantage and importance in the event of itsbeing desirable to replace a 'worn holdmg member, and by reason of thefact that each member holds its balls independently of the others, theremoval of one will release but the one ball, the other balls being undisturbed.

'The holding members are formed of a deconfining formable material, thatis, a material adapted to be bent to change its form, sothat the membersmay be so interlocked with the ring as in the manner shown, that theirindependent removal may be efiected at will andwithout the use ofspecial tools such as would be required if the holding members wereriveted to the ring.

In setting up or assembling the parts of the bearing, the cage and ballsare assembled in the casing members with the holding members in anunfinished form as represented at the bottom of Fig. 2, whereupon theunbent portions of the holding members are by suitable means, bent downon the balls so as to embrace and retain them yieldingly in place, thisaction being permitted by the character of the material used in the.

formation of the members, which when bent down as described to embracethe balls, will hold them resiliently and with a spring pressure.

While the invention is shown applied to a radial hearing, it may beemployed also inconnection with thrust bearings without material changein operation or function.

Having thus described my invention, what- I claim and desire to secureby Letters Patent of the United States is as follows:

1. A spacing cage for antifri'ction bearings, comprising a ring orsupport and holding members for the rolling elementscarried thereby,said members consisting each of a metal strip bent between its ends inthe form of a loop to embrace the rolling element, and having its endsfolded back on the sides of the loop and fastened to the support. 2. Aspacing cage for antifriction bearings, comprising a ring or support,and holdin members for, the rolling elements carrie thereby, saidmembers consisting each of a single strip of'metal having its centralportion bent in the form of a loop to embrace the rolling element, andhaving its ends folded back on the sides of the loop and detachablyinterlocked with the support. 7

3. A spacing cage for antifriction bearings, comprisinga ring or supportprovided at intervals with slots, and holding members for the rollinelements carried by the support, said mem ers consisting each of a stripof metal bent between its ends in the form of a loop to embrace therolling element,

and having its ends folded back on the sides,

of the loop and passed through the slots in the support, and bentagainst the face of the same.

In testimony whereof I have aflixed my signature in presence of twowitnesses.

FRIEDRICH BALTZER.

Witnesses: HENRY HAsPER,

WOLDEMAR HAUPT.

